Induction Motor Definition
An induction motor or asynchronous motor is a type of alternating current motor where power is supplied to the rotor by means of electromagnetic induction. An electric motor turns because of magnetic force exerted between a stationary electromagnet called the stator and a rotating electromagnet called the rotor. Different types of electric motors are distinguished by how electric current is supplied to the moving rotor. In a DC motor and a slip-ring AC motor, current is provided to the rotor directly through sliding electrical contacts called commutators and slip rings. In an induction motor, by contrast, the current is induced in the rotor without contacts by the magnetic field of the stator, through electromagnetic induction. An induction motor is sometimes called a rotating transformer because the stator (stationary part) is essentially the primary side of the transformer and the rotor (rotating part) is the secondary side. Unlike the normal transformer which changes the current by using time varying flux, induction motors use rotating magnetic fields to transform the voltage. The current in the primary side creates an electromagnetic field which interacts with the electromagnetic field of the secondary side to produce a resultant torque, thereby transforming the electrical energy into mechanical energy.
An induction motor is a motor whose stator is fed by AC supply, and the rotor gets supply by mutual induction from stator. selectrical.blogspot.in/2014/02/working-principle-and-types-of.html
An induction motor is a motor that provides power. It owes its name to the way it operates. Alternating current (AC) voltages are induced by the magnetic and rotating field of the stator in the rotor circuit. An induction motor is constructed with elements of copper, steel, and aluminum. While this makes them more expensive than universal motors, it also increases their quality and durability.
